我有一个应用程序，它监视FTP文件夹中的特定csv文件foo.csv，一旦找到该文件，它会将其拉到我的本地并生成新的输出格式bar.csv，然后该应用程序将发送新的文件finalBEY.csv返回FTP文件夹并从本地删除。
现在，我介绍了一个使用publishSubscribeChannel的过程，它将文件转换为消息，然后使用jobLaunchingGateway，它将使用批处理读取finalBEY.csv并将其打印到consol中，由于finalBEY.csv被发送回FTP后从本地Ford中删除，因此无法正常工作，我在第一个.channel("nullChannel")中的jobLaunchingGateway上使用subscribe保留它，直到从批处理中得到答复，然后移到下一个subscribe，它将发送到ftp并将其从本地删除，但是似乎不是从本地删除它的情况，因此批处理找不到finalBEY.csv，并抛出了我要在下面粘贴代码的错误。
如果我从第二个subscribe中删除建议，它会正常工作，因为它将不再从本地删除建议。
在这件事上您能帮忙吗？
public IntegrationFlow localToFtpFlow(Branch myBranch) {
return IntegrationFlows.from(Files.inboundAdapter(new File(myBranch.getBranchCode()))
.filter(new ChainFileListFilter<File>()
.addFilter(new RegexPatternFileListFilter("final" + myBranch.getBranchCode() + ".csv"))
.addFilter(new FileSystemPersistentAcceptOnceFileListFilter(metadataStore(dataSource), "foo"))),//FileSystemPersistentAcceptOnceFileListFilter
e -> e.poller(Pollers.fixedDelay(10_000)))
.enrichHeaders(h ->h.headerExpression("file_originalFile", "new java.io.File('"+ myBranch.getBranchCode() +"/FEFOexport" + myBranch.getBranchCode() + ".csv')",true))
.transform(p -> {
LOG.info("Sending file " + p + " to FTP branch " + myBranch.getBranchCode());
return p;
})
.log()
.transform(m -> {
this.defaultSessionFactoryLocator.addSessionFactory(myBranch.getBranchCode(),createNewFtpSessionFactory(myBranch));
LOG.info("Adding factory to delegation");
return m;
})
.publishSubscribeChannel(s ->
s.subscribe(f ->f.transform(fileMessageToJobRequest())
.handle(jobLaunchingGateway()).channel("nullChannel"))
.subscribe(h -> h.handle(Ftp.outboundAdapter(createNewFtpSessionFactory(myBranch), FileExistsMode.REPLACE)
.useTemporaryFileName(true)
.autoCreateDirectory(false)
.remoteDirectory(myBranch.getFolderPath()), e -> e.advice(expressionAdvice()))))
.get();
}
@Bean
public FileMessageToJobRequest fileMessageToJobRequest(){
FileMessageToJobRequest fileMessageToJobRequest = new FileMessageToJobRequest();
fileMessageToJobRequest.setFileParameterName("file_path");
fileMessageToJobRequest.setJob(orderJob);
return fileMessageToJobRequest;
}
@Bean
public JobLaunchingGateway jobLaunchingGateway() {
SimpleJobLauncher simpleJobLauncher = new SimpleJobLauncher();
simpleJobLauncher.setJobRepository(jobRepository);
simpleJobLauncher.setTaskExecutor(new SyncTaskExecutor());
JobLaunchingGateway jobLaunchingGateway = new JobLaunchingGateway(simpleJobLauncher);
return jobLaunchingGateway;
}
/**
* Creating the advice for routing the payload of the outbound message on different expressions (success, failure)
* @return Advice
*/
@Bean
public Advice expressionAdvice() {
ExpressionEvaluatingRequestHandlerAdvice advice = new ExpressionEvaluatingRequestHandlerAdvice();
advice.setSuccessChannelName("success.input");
advice.setOnSuccessExpressionString("payload.delete() + ' was successful'");
//advice.setOnSuccessExpressionString("inputMessage.headers['file_originalFile'].renameTo(new java.io.File(payload.absolutePath + '.success.to.send'))");
//advice.setFailureChannelName("failure.input");
advice.setOnFailureExpressionString("payload + ' was bad, with reason: ' + #exception.cause.message");
advice.setTrapException(true);
return advice;
}
这是错误，如您所见，第一行显示该错误已传输到FTP，然后启动了批处理作业，而在subscription中应该先进行批处理...
INFO 10452 --- [ask-scheduler-2] o.s.integration.ftp.session.FtpSession : File has been successfully renamed from: /ftp/erbranch/EDMS/FEFO/finalBEY.csv.writing to /ftp/erbranch/EDMS/FEFO/finalBEY.csv
Caused by: java.lang.IllegalStateException: Input resource must exist (reader is in 'strict' mode): file [C:\Java Programs\spring4ftpappftp\BEY\finalBEY.csv]
at org.springframework.batch.item.file.FlatFileItemReader.doOpen(FlatFileItemReader.java:251) ~[spring-batch-infrastructure-4.0.1.RELEASE.jar:4.0.1.RELEASE]
at org.springframework.batch.item.support.AbstractItemCountingItemStreamItemReader.open(AbstractItemCountingItemStreamItemReader.java:146) ~[spring-batch-infrastructure-4.0.1.RELEASE.jar:4.0.1.RELEASE]
... 123 common frames omitted
调试代码：
2019-07-15 10:43:02.838 INFO 4280 --- [ask-scheduler-2] o.s.integration.ftp.session.FtpSession : File has been successfully transferred to: /ftp/erbranch/EDMS/FEFO/finalBEY.csv.writing
2019-07-15 10:43:02.845 INFO 4280 --- [ask-scheduler-2] o.s.integration.ftp.session.FtpSession : File has been successfully renamed from: /ftp/erbranch/EDMS/FEFO/finalBEY.csv.writing to /ftp/erbranch/EDMS/FEFO/finalBEY.csv
2019-07-15 10:43:02.845 DEBUG 4280 --- [ask-scheduler-2] o.s.b.f.s.DefaultListableBeanFactory : Returning cached instance of singleton bean 'integrationEvaluationContext'
2019-07-15 10:43:02.848 DEBUG 4280 --- [ask-scheduler-2] o.s.b.f.s.DefaultListableBeanFactory : Returning cached instance of singleton bean 'success.input'
2019-07-15 10:43:02.849 DEBUG 4280 --- [ask-scheduler-2] o.s.integration.channel.DirectChannel : preSend on channel 'success.input', message: AdviceMessage [payload=true was successful, headers={id=eca55e1d-918e-3334-afce-66f8ab650748, timestamp=1563176582848}, inputMessage=GenericMessage [payload=BEY\finalBEY.csv, headers={file_originalFile=BEY\FEFOexportBEY.csv, id=a2f029b0-2609-1a11-67ef-4f56c7dd0752, file_name=finalBEY.csv, file_relativePath=finalBEY.csv, timestamp=1563176582787}]]
2019-07-15 10:43:02.849 DEBUG 4280 --- [ask-scheduler-2] o.s.i.t.MessageTransformingHandler : success.org.springframework.integration.transformer.MessageTransformingHandler#0 received message: AdviceMessage [payload=true was successful, headers={id=eca55e1d-918e-3334-afce-66f8ab650748, timestamp=1563176582848},
inputMessage=GenericMessage [payload=BEY\finalBEY.csv, headers={file_originalFile=BEY\FEFOexportBEY.csv, id=a2f029b0-2609-1a11-67ef-4f56c7dd0752, file_name=finalBEY.csv, file_relativePath=finalBEY.csv, timestamp=1563176582787}]]
2019-07-15 10:43:02.951 DEBUG 4280 --- [ask-scheduler-2] o.s.b.i.launch.JobLaunchingGateway : jobLaunchingGateway received message: GenericMessage [payload=JobLaunchRequest: orderJob, parameters={file_path=C:\Java Programs\spring4ftpappftp\BEY\finalBEY.csv, dummy=1563176582946}, headers={file_originalFile=BEY\FEFOexportBEY.csv, id=c98ad6cb-cced-c911-1b93-9d054baeb9d0, file_name=finalBEY.csv, file_relativePath=finalBEY.csv, timestamp=1563176582951}]
2019-07-16 08:35:29.442 INFO 10208 --- [nio-8081-exec-3] o.s.i.channel.PublishSubscribeChannel : Channel 'application.FTPOutp' has 1 subscriber(s).
2019-07-16 08:35:29.442 INFO 10208 --- [nio-8081-exec-3] o.s.i.endpoint.EventDrivenConsumer : started 1o.org.springframework.integration.config.ConsumerEndpointFactoryBean#3
2019-07-16 08:35:29.442 INFO 10208 --- [nio-8081-exec-3] o.s.i.endpoint.EventDrivenConsumer : Adding {message-handler} as a subscriber to the '1o.subFlow#1.channel#0' channel
2019-07-16 08:35:29.442 INFO 10208 --- [nio-8081-exec-3] o.s.integration.channel.DirectChannel : Channel 'application.1o.subFlow#1.channel#0' has 1 subscriber(s).
2019-07-16 08:35:29.442 INFO 10208 --- [nio-8081-exec-3] o.s.i.endpoint.EventDrivenConsumer : started 1o.subFlow#1.org.springframework.integration.config.ConsumerEndpointFactoryBean#1
2019-07-16 08:35:29.442 INFO 10208 --- [nio-8081-exec-3] o.s.i.endpoint.EventDrivenConsumer : Adding {bridge} as a subscriber to the 'FTPOutp' channel
2019-07-16 08:35:29.442 INFO 10208 --- [nio-8081-exec-3] o.s.i.channel.PublishSubscribeChannel : Channel 'application.FTPOutp' has 2 subscriber(s).
答案 0 :(得分：0)
由于您使用的是SyncTaskExecutor，因此批处理作业应在调用线程上运行，然后是FTP适配器。
使用DEBUG日志记录并按照消息流查看为什么没有发生这种情况。